Sliding Puzzle Game - Suggessions

I am very new to the iPhone game development world and going through the cocos2D book as well some other online tutorial to get some grip
I would like to make the classic puzzle game (numbers, not picture) with option to choose from 3x3 or 4x4 or 5x5 etc.

I recently released my first game that involves sliding tiles. I built this using the excellent Sparrow Framework ( http://gamua.com/sparrow/ ). It very easy to get started, and the tutorial that accompanies the framework is exactly what you'll need for your game.

Whatever framework you decide to use (any of them would be suitable for a sliding puzzle) your first step will be getting a tile drawn on the screen, then being able to draw one that moves, then drawing a bunch of them.

As for how to represent it, I would just use a two-dimensional C array.

Edit: Oops, this thread is months old. My bad ;p Advice still applies though if you're still stuck.